Carburetor



June 22 1926.

J. VOGEL CARBURETOR Filed Feb. 2, 1920 2 ,Sheets-Sheet l June 22 1926; 1,589,671

J. VOGEL CARBURETOR Filed Feb. 2, 1920 2= Sheets-Sme?l 2 Patented une 22, 1926.

UNITED STATES 1,589,671 PATENT OFFICE;

JosEF VOGEL, or MUNICH, GERMANY.

CARBURETOR. l

. Application led February 2, 1920, Serial No. 355,868, and in 4Germany November 18, 1918.'

The invention relates to carburetors for combustion engines, and has for its object to make it possible tolv accurately regulate the fuel supply. Y

In order that my invention may be fully understood and more readily carried into practice, I have caused to be appended hereunto two sheets of drawings illustrating three constructional examples thereof, wherein:

Figures 1 and 2 are views of different structures iny vertical section,

'Figure 3 is a view in cross section on line A.'-A of Figure 2, and

Figure l is also a View in vertical section of a further modification.

In the constructional example shown in Figure l, a is the carburetor` casing having a main air passage z', and in which is arranged a bridge e having a supply passage 'n for the fuel coming from the float chamber d. The bridge e,which is situated beneath the throttle valveb, contains a distributing tube f, which is pushed in from the side and is `prevented from rotating by means of a pin p and is pressed in a fluid tight manner a ainst its seat h by a screw cap g. In the distributing tube f and in the bridge e are rovided supply holes r, '3, t arranged one ehind another in a vertical plane. In addiltion the carburetor casing a has an air inlet passage Z, which opens into the passage fr; t e passage 1', for throttling purposes 1s rovided with a set'screw m and serves for idle running of the engine.

The supply holes 7', 8, t are so arranged in relation to the hole lc of the throttle valve b that, on moving the same from idle running to full ower, only the hole 1 is rst uncovered, W ereby only a small amount of fuel can How out. 3Then, on further rotation of the valve '6, the hole s is uncovered for the purpose of increasing the supply of fuel and thereby obtaining a uni orm change from idle running to full power of the engine, until inally in theA open position of the valve b the hole t becomes also uncovered, whereby the motor runs with full carburation. In this case the hole 1' for idle running remains closed as shown in the position illustrated in Figure l. The

air tube o which may be of different sizes can be screwed into the carburetor'casing a for the purpose of enabling the carburetor (GRANTED UNDER THE PROVISIONS 0F THE ACT MARCH 3, 1921, 41 STAT. L., 1313.)v

to beemployed for different sizes of engines.

The constructional example shown in Figures 2 and 3 differs from that shown .in Figure l in that the fuel. supply lis distributed in greater quantity, moreparticularly for powerful engines.

The supply holes s, t are provided at their mouths which face the valve?) with extensions or grooves u fu of dierent sizes, which' gradually pass into the curve of the carburetor casing a, see Figure 2.

After opening the hole 1' by means of the throttle valve b, the main air passage f of the carburetor casing, becomes open, whereby a partA of the groove u is uncovered and the fuel comes out of the hole s. Further rotation of the throttle valve b results in the main air passage becoming more and more open; and the same effect is produced on the groove u, until the hole s becomes u-ncovered.' I-Iereupon, on fully opening the throttle valve b the second supply hole t and its groove v a're uncovered. The combustible' mixture of air and fuel is proper mixture for every intermediate Aposition of the throttle valve b.

In Figure t a constructional example is illustrated which is particularly suited for quick and thorough Carburation of heavy fuels such as hea benzol, heavy oil, and so forth. The usua priming cup is used in starting.

For this pur ose the distributing tube f is provided wit annular grooves w or similar cavities at the mouths of the holes 1', s, t,

The supply passage n for the fuel, in this case' is also formed as a fuel mixture chamber because the air supply pipe y is provided, whereby a mixtureV of fuel with air takes place when the engine is running. This mixture arrives through the. distributing tube f into the annular grooves fw and from these to the holes 1', s, t. Simultaneously the engine draws in air through the holes m which also enters the annular grooves w. This air travelling through the annular grooves roundthe distributing tube f mixes with the mixture coming from the supply assage n and ensures a further thorough division of the same, whereby the fuel 1s made more capable of combustion.

It is to be noted thathe annular grooves .l ya...

a fuel-distributing 'w may be combined with the construction shown in Fig. `2.

I claim:

1. A carburetor comprising a casing, a bridge piece extending across thecasing and havin a plurality of passages extending theret rough in the direction of the air flow, tube mounted in the bridge piece, intersecting said passages, having peripheral grooves and openings from its bore to said grooves, said grooves connecting the parts of said passages above and below said tube, and a throttle valve mounted in the casing and adapted to successively control said passages.

2. A carburetor comprising a casing, a

ing a bridge extending across the casing and llavplurality of passages extending therethrough in the ldirection of air flow and terminatlng in, arcuate tapered, extensions; a fuel-distributing tube mounted in the bridge piece, intersecting said passages, having peripheral grooves and openings from its bore to 'said grooves, sai-d parts of said passages above and below said tube, and a cylindrical throttle valve rotatably mounted in the casing and arranged to successively control the tapered extensions of said passages.

In testimony that I claim the foregoing as my invention, I have'signed my name.

JOSEF VOGEL.

grooves connecting the 

